You probably can't do this. But there is a solution. If you don't know what a domain is at all, then you likely are not on one. If you and the remote computer are not on a domain, then you cannot offer remote assistance. See KB308013. However, they can still invite you. Read the explanation in the link given by the previous poster. If you are still uncertain whether or not you or the remote computer are on a domain, then, when you log onto your computer, look for the box labelled "Log onto" and see what domain it says. You may have to click the "Options" button on the logon screen to see it. If no "Log onto" window appears even after pushing the "Options" button, there is no domain. If there is no domain, then the solution is to have the end user request remote assistance. The end user choses Start, then Help and Support, then goes to the first option in the second column, "Invite a friend to connect to your computer with Remote Assistance". Once they have invited you (requires either email or both of you to be using Windows Messenger, or for them to save it as a file, open it in notepad, read off the exact contents and file name including extension, and you to create an identical file, with the same name and contents), you will be able to help them. If this option is disabled, or you can view the remote computer's screen but not actually control it, they need to right-click on "My Computer", select "Properties", go to the "Remote" tab, put a check mark in the top check mark box. Then they need to click on "Advanced" and put a check mark in the box on the next page, if empty. Make certain that the boxes below that give a resonable amount of time for you to connect to their computer and fix the problem, then click "OK", then "OK". Hope that helps!